20947619

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{1669}}^1$

素因数の和:1850

約数の個数: 16

約数和(自身を含む): 26292480

約数和(自身を除く): 5344861

約数列:

[1, 7, 11, 77, 163, 1141, 1669, 1793, 11683, 12551, 18359, 128513, 272047, 1904329, 2992517, 20947619]

約数ペア:

[(1, 20947619), (7, 2992517), (11, 1904329), (77, 272047), (163, 128513), (1141, 18359), (1669, 12551), (1793, 11683)]